High dynamic synchronization algorithm based on cyclic spectral density

GAO Yu-long^1,2, CHEN Yan-ping³, WANG Qi², SHA Xue-jun¹, ZHANG Zhong-zhao¹

1.Communication Research Center,Harbin Institute of Technology,Harbin 150080,China;2.Photoelectricity Research Institute,Harbin Institute of Technology,Harbin 150080,China;3.College of Computer Science and Technology,Harbin Engineering University,150001 Harbin,China



Abstract:

A new high dynamic synchronization algorithm using cyclic spectral density was presented according to the theories of cyclic spectral density and its anti-interface and anti-noise properties.The closed forms of frequency error and phase error were obtained,and their performances were analyzed.The in-phase signal throw costas loop was normalized to obtain a cosine signal.Cyclic spectral density of the cosine signal of was computed to obtain the frequency error and the phase error and then results were put into NCO to synchronize.Finally,the performance of the presented algorithms was compared with the conventional algorithms by virtue of simulations,and the simulation results proved the correctness and the superiority of the new algorithms.

Key words:  cyclic spectral density  frequency-locked phase-locked loop  high dynamic synchronization  strip spectral correlation

DOI：10.11916/j.issn.1005-9113.2011.03.023

Clc Number:TP301.6

Fund: